Where district boundaries are indicated as approximately following the center lines of streets, highways, waterways or railroad rights-of-way or such lines extended, such center lines shall be construed to be such boundaries.

Where such boundaries are indicated as approximately following the property lines of parks or other publicly owned lands, such lines shall be construed to be such boundaries.

In all other cases where a district boundary divides a lot in one ownership and more than 50% of the area of such lot lies in the less restricted district, the regulations prescribed by this chapter for the less restricted district shall apply to such portion of the more restricted district which lies within 30 feet of such district boundary. For purposes of this section, the more restrictive zoning district shall be deemed the zoning district which pursuant to this chapter prohibits the use intended to be made of the lot or requires more stringent standards for coverage, setbacks, screening, landscaping and other requirements.

In all cases where a district boundary line is located not farther than 15 feet from a lot line of record, such boundary line shall be construed to coincide with such lot line.

In all other cases where dimensions are not shown on the map, the location of boundaries shown on the map shall be determined by the Building Inspector.

Where a lot in one ownership of record is divided by one or more municipal boundary lines, dimensional requirements shall be measured from lot lines and not from district boundaries.

No building shall be erected, moved, altered, rebuilt or enlarged, nor shall any land or building be used, designed or arranged to be used for any purpose or in any manner, except in conformity with all regulations, requirements and restrictions specified in this chapter for the district in which such building or land is located.

No yard or open space required in connection with any building or use shall be considered as providing a required open space for any other building on the same or any other lot.

No lot shall be formed from part of a lot already occupied by a building unless such building, all yards and open spaces connected therewith and the remaining lot comply with all requirements prescribed by this chapter for the district in which said lot is located. No building permit shall be issued for the erection of a building on any new lot thus created unless such building and lot comply with all the provisions of this chapter.

Any use not permitted by this chapter shall be deemed to be prohibited. Any list of prohibited uses contained in any section of this chapter shall be deemed to be not an exhaustive list but to have been included for the purposes of clarity and emphasis and to illustrate, by example, some of the uses frequently proposed that are deemed undesirable and incompatible and that are thus prohibited.